208 Trans. Acad. Sci. of St. Louis. 



Northview sandstone and shales, and the Pierson limestone, 

 of southwestern Missouri. 



In the Kinderhook section, at Louisiana, Missouri, three 

 formations, the Louisiana limestone, the Hannibal shale 

 and the Chouteau limestone, have been recognized 

 by the Missouri Geological Survey.* In the lists of 

 species from these formations at this locality, pub- 

 lished by Keyes t and Rowley, almost the entire Kinder- 

 hook fauna is restricted to the Louisiana limestone. Only 

 thirteen species are recorded from the Hannibal shale, 

 and of these four are not identified specifically. With two 

 unimportant exceptions every one of these nine species defi- 

 nitely recognized is present elsewhere in faunas of Chouteau 

 age. The species recognized are the following : Atliyrishan- 

 nibalensis ( — A., (amellosa), Chonetes ornatus, Rhipidomella 

 missouriensis (this species is probably identical with R. bur- 

 lingtonensis as identified from Kinderhook horizons), Spi- 

 rifer marionensis, Syringothyris carteri, Grammy sia hanni- 

 balensis (a typical specimen of this species from the North- 

 view sandstone near Wishart, Missouri, is preserved in the 

 collection of Walker Museum), and Pernopectm cooperensis. 

 This assemblage of species may be safely considered as rep- 

 resenting the fauna of the typical Chouteau horizon, in part, 

 at least the fauna of the upper portion of the Kinderhook 

 section at Burlington and the Kinderhook fauna of south- 

 west Missouri. 



The so-called Chouteau limestone of the Louisiana section, 

 a bed with a thickness of but nine feet, contains a more pro- 

 lific fauna than the Hannibal shale, twenty-eight species in all 

 being- recorded. Eighteen of these are crinoids or other 

 echinoderms, which are for the most part Burlington lime- 

 stone species, every one of them except Rftodocrinus lohitei 

 being originally described from the lower Burlington lime- 

 stone or from the bed in question at Louisiana. R. whitei 

 was described by Hall from the Chemung sandstone at Bur- 

 lington and probably came from bed No. 7 at that locality. 

 Of the other species recorded, Zaphrentis calceola, Athyris 



* Mo. Geol. Surv. 4 : 48-57. 

 t Proc. Io. Acad. Sci. 4:29. 



